How to protect your SIM card against threats

Various threats have appeared in the news these months may affect the SIM card of an Android phone. This is simjacker, a threat that we have already talked about, in addition to card swapping (change or replace the card). These two threats are something to consider and that for many users are a concern.

As with most threats, there is always certain measures or precautions What can we take Thanks to them we can help protect the SIM of our phone, preventing us from being victims, at least as far as possible, of these types of threats whose presence remains a reality.

There are various measures that are possible for users, to make your SIM card will be better protected at all times before a threat of this kind. They are measures available to everyone, which contribute to better security in the two cases mentioned.

Use a PIN to unlock the SIM

How to change the SIM PIN code or remove it completely

The current trend is just the opposite, with more and more users betting on removing the PIN on their SIM card. Although the use of a PIN code is always recommended if security and privacy are put before of users first. Therefore, in a situation like this, in which you want to protect said card, it is best to use one. If your card already has one, you can change it if you want, something that we already show you. The steps to follow are:

  • Open the settings of your Android phone.
  • Enter the section called Security and privacy (name may change depending on your personalization layer).
  • Find the option called SIM card settings.
  • Enter the SIM settings.
  • Click on the Change SIM card PIN option.
  • Enter the current PIN code of the card.
  • Enter the new code and then you will have to enter it one more time.

The process of changing this code is not complicated, therefore, as you can see. The important thing in this type of cases is to choose the code in question That you decide to use in it. Use a code that is relatively complicated to decipher (so we rule out options like 0000 or 1234), and that is not our birth date or an anniversary either. These types of aspects help that if someone seeks to decipher said code, they have more problems in said process.

Personal information


In the case of threats like Card swapping, the attackers pose as the user to obtain a copy of the SIM card. To make this possible, they seek to obtain as much personal information as possible from said person, so that they will be able to convince the customer service of an operator that they are that person and thus obtain said SIM. In this case, personal information must be protected.

The idea is complicate to the maximum that someone will be able to obtain information Our staff, especially information that they will be able to use to contact an operator and obtain the specific SIM they are looking for. So limit the profiles that you have on social networks, that nobody can access that information apart from friends, in addition to controlling what we are sharing with the rest of the world in our accounts, such as the Google account.

Review the aaccount privacy settings It is something that is always convenient, to avoid someone knowing something that should not. It is these types of adjustments that in many cases we forget, but can be very useful, for greater security in our account.

Two step verification

An option closely related to the previous section, but that is certainly a good way to protect your accounts in an effective way, preventing someone from having access to your personal information, is to activate the verification in two steps. More and more accounts have this method available (Google, Facebook, Instagram and many more). Its use is therefore a good option for many users.

How to activate this verification in two steps It is variable depending on the account in question, although we have already shown you the way in which it is done. So if you were thinking about doing it, to protect your data, especially in the case of SIM Swapping, it is a way to protect your personal data.